[Resource Topic] 2006/215: Cryptanalysis of an Image Scrambling Scheme without Bandwidth Expansion

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Title:
Cryptanalysis of an Image Scrambling Scheme without Bandwidth Expansion

Authors: Shujun Li, Chengqing Li, Kowk-Tung Lo, Guanrong Chen

Abstract:

Recently, a novel image scrambling (i.e., encryption) scheme without bandwidth expansion was proposed based on two-dimensional (2-D)discrete prolate spheroidal sequences (DPSS). This paper gives a comprehensive cryptanalysis of the image scrambling scheme, and draw a conclusion that it is not sufficiently secure against various cryptographical attacks, including ciphertext-only attack, known/chosen-plaintext attack and chosen-ciphertext attack. The cryptanalytic results suggest that the image scrambling scheme can only be used to realize perceptual encryption, instead of provide content protection for digital images.

ePrint: https://eprint.iacr.org/2006/215

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